Re: Bluez patches for Multiple SCO Links

[Brian Smith <door@shapeseeker.com>]

Mikel Astiz wrote:
>
> Assuming your Kernel includes the patches, and you're using the latest
> upstream version of BlueZ, most probably the problems you are having
> are related to the MTU size.
>
> These issues are a bit obscure to me and I don't have a full
> explanation, but the MTU used during double-SCO needs to be twice as
> big. My patches regarding this problem were (reasonably) rejected so
> you will have to find a workaround.
>
> First make sure the adapter is configured with at least 128 bytes,
> using hciconfig hci0 scomtu 128:1. Once you have this, you should
> probably be able to receive/record audio properly. If you want to
> send/play audio, you might face some additional problems. However I
> must admit I haven't tested it with hstest.
>
>   
Thanks for your reply Mikel. I tested your suggestion of changing the 
MTU and it worked!  It started as 64:8, changing to 128:1 didn't work 
but changing to 128:8 solved the problem. (I am using kernel 3.5rc1, 
BlueZ 4.100,  'Sitecom' branded CSR dongle, 'hstest.c' player). Also 
I've tested both playback and recording on 2 headsets in parallel, both 
are working well.

Cheers,
Brian.

-- 
Brian Smith.
"The bells of clocktowers stitch the sleeper's dreams together." - Memory Palace